3results about How to "Simple structure processing" patented technology

This utility model relates to the field of yarn feeder technology, and discloses a guide roller assembly and a yarn feeder for a high-speed, multi-path yarn feeder. The guide roller assembly includes a bearing B, a bearing A, a roller, a mandrel, an elastic washer, and fixing screws. Bearing B is a floating bearing. An O-ring is added to the mandrel at the location of the floating bearing B. By changing the depth of the groove of the O-ring and the matching of the O-ring wire diameter, suitable friction can be obtained, stabilizing the static state of the inner ring of the floating bearing B, avoiding wear between the inner ring of bearing B and the mandrel, and ensuring that the bearing is always in a normal working state. This guide roller assembly has a simple structure and stable improvement effect.

The application discloses a kind of patterning composite substrate and its preparation method, in the preparation method of the application, the edge is chamfered, and the etching rate of matching edge is slower, and the etching rate of matching center area is higher, solve the production problem caused by edge effect, and finally microstructure meeting process requirements can be obtained on the whole substrate, i.e. it can guarantee the crystallization quality of edge area GaN material growth, reduce the output of final qualified finished product core grain.The composite substrate of the application is formed with microstructure, and the high-quality growth of GaN material is facilitated.

The utility model relates to the technical field of screw nut mechanism, specifically relates to planet roller screw pair and electric cylinder. Planet roller screw pair includes nut, screw and roller, and the axial both sides of thread section on roller are equipped with limit section respectively, the diameter of limit section is less than the diameter of thread section, and the thread section of roller is all screwed with nut and screw, and the thread rotation direction of nut is opposite with the thread rotation direction of roller, the part of limit section of roller and corresponding limit section of nut is equipped with the ring groove around the axis, the inner diameter of the part of nut and is equipped with ring groove is less than the inner diameter of its part and is equipped with thread, and the part between the ring groove of roller and the adjacent two ring grooves of nut cooperates to restrict roller, makes the revolution and rotation movement of roller around screw, and this structure is simple to process, and the technology is easy to realize, and it is favorable for reducing production manufacturing cost.